NH900S public dual-mode digital cluster interphone supports PDT cluster intercom and 5G/4G public network cluster, which can realize automatic switching of public private. PDT private network signal reception is sensitive, operation is simple and convenient, sound is clear and loud, endurance is durable, supports hardware independent Beidou positioning, and obtains accurate position information at all times. The whole machine adopts single-knob professional walkie-talkie layout, large-screen touch quick key interaction, high-strength two-color body, high-grade waterproof sealing, which can ensure lasting use in harsh environments.